...E. Pedroza; W. García-Biénere; J.M. Rosner Norepinephrine increased the in vitro uptake of 3 H-estradiol by the uterus of spayed rats. This effect was observed at 15 and 30 min but not at 90 min. Norepinephrine also increased the binding of 3 H-estradiol by the nuclear (p < 0.02) and the cytosol...

... which show a marked decrease in uptake of the labelled pre- cursor by the DNA. The second group is represented by organs like omental fat, femor, kidney, and muscle, in which no significant changes occur after depletion of the ovarian hormones. Some organs belonging to the third group show an apparently...

... metabolites. The results provide evidence that the normal concentrations of adrenal cortical steroids are essential for the normal uptake of catecholamines by the heart. The results also suggest that adrenocortical hormones inhibit metabolism of exogenously administered 3 H-epinephrine. The inactivation...

...Walmiryam García Biénere; Pedroza García; J.M. Rosner Epinephrine diminished in vitro uptake of 3 H-estradiol by the uterus of spayed rats treated with estradiol (2 µg) for 3 days. This effect was observed at 15 min in the cytosol and at 30 min in the nuclear fraction. Epinephrine did not show any...

...I. Covelli; Rita Mozzi; R. Rossi; L. Frati The effect of the epidermal growth Factor (EGF) on the rate of synthesis of DNA, RNA and proteins in two different kinds of isolated tumor cells have been studied by timing the uptakes of the labeled precursors 3 H-thymidine, 3 H-uridine and 14 C-amino...